UNISONIC TECHNOLOGIES CO.,
LM79XX
3 TERMINAL 1A NEGATIVE
VOLTAGE REGULATOR
DESCRIPTION
The UTC
LM79XX
series of three-terminal negative regulators is
available several fixed output voltage, making them useful in a wide
range of application. Each type employs internal current limiting, thermal
shut-down and safe area protection, making it essentially indestructible.
LINEAR INTEGRATED CIRCUIT
FEATURES
* Output Current Up to 1A
* -5V, -6V, -8V, -9V,-12V, -15V, -18V, -24V Output Voltage Available
* Thermal Overload Protection
* Short Circuit Protection
ORDERING INFORMATION
Ordering Number
Normal
Lead Free
LM79xx-TA3-T
LM79xxL-TA3-T
LM79xx-TF3-T
LM79xxL-TF3-T
Note: O: Output G: GND I: Input
Halogen Free
LM79xxG-TA3-T
LM79xxG-TF3-T
Package
TO-220
TO-220F
Pin Assignment
1
2
3
G
I
O
G
I
O
Packing
Tube
Tube
MARKING INFORMATION
PACKAGE
VOLTAGE CODE
05:
-
5.0V
06:-6.0V
08:-8.0V
09:-9.0V
12:-12V
15:-15V
18:-18V
24:-24V
MARKING
TO-220
TO-220F
Voltage Code
Lot Code
UTC
LM79
L: Lead Free
G: Halogen Free
Date Code
1
2
3
www.unisonic.com.tw
Copyright © 2008 Unisonic Technologies Co.,
7 of 7
QW-R101-007.F
LM79XX
BLOCK DIAGRAM
LINEAR INTEGRATED CIRCUIT
GND
R
1
R
2
OUTPUT
Voltage
Reference
Protection
Circuitry
RSC
INPUT
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QW-R101-007.F
LM79XX
ABSOLUTE MAXIMUM RATINGS
(T
a
=25°C)
PARAMETER
LINEAR INTEGRATED CIRCUIT
SYMBOL
RATING
UNIT
Input Voltage
V
IN
-35
V
Output Current
I
OUT
1
A
Power Dissipation
P
D
Internally Limited
W
Operating Temperature
T
OPR
0 ~ +125
°C
Storage Temperature
T
STG
-65 ~ +150
°C
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
THERMAL DATA
PARAMETER
Junction to Ambient
Junction to Case
SYMBOL
θ
JA
θ
JC
RATING
65
5
UNIT
°C
/W
°C
/W
ELECTRICAL CHARACTERISTICS
(I
OUT
=0.5A, T
J
=0°C~125°C, C
I
=2.2uF, C
O
=1uF, unless otherwise specified)
For UTC LM7905
(V
IN
=-10V)
PARAMETER
Output Voltage
Dropout Voltage
Line Regulation
Load Regulation
Quiescent Current
Quiescent Current Change
Output Noise Voltage
Output Voltage Drift
Ripple Rejection
Peak Current
Short Circuit Current
For UTC LM7906
(V
IN
=-11V)
PARAMETER
Output Voltage
Dropout Voltage
Line Regulation
Load Regulation
Quiescent Current
Quiescent Current Change
Output Noise Voltage
TEST CONDITIONS
T
J
=25°C
V
OUT
V
IN
=-7V~-20V
I
OUT
=5mA~1A, P
D
≦
15W
V
D
I
OUT
=1A
T
J
=25°C
V
IN
=-7V~-25V
T
J
=25°C
Δ
V
OUT
V
IN
=-8V~-12V
T
J
=25°C
I
OUT
=5mA~1A
T
J
=25°C
Δ
V
OUT
I
OUT
=250mA~750mA
T
J
=25°C
I
Q
T
J
=25°C
I
OUT
=5mA~1A
ΔI
Q
V
IN
=-7V~-25V
eN
f=10Hz~100kHz
T
a
=25°C
Δ
V
OUT
/ΔT I
OUT
=5mA
RR
V
IN
=-8V~-18V, f=120Hz
I
PEAK
T
J
=25°C
I
SC
V
IN
=-35V
T
a
=25°C
SYMBOL
V
OUT
V
D
ΔV
OUT
ΔV
OUT
I
Q
ΔI
Q
eN
TEST CONDITIONS
T
J
=25°C
V
IN
=-8V~-21V,
I
OUT
=5mA~1A, P
D
≦
15W
I
OUT
=1.0A
T
J
=25°C
V
IN
=-8V~-25V
T
J
=25°C
V
IN
=-9V~-13V
T
J
=25°C
I
OUT
=5mA~1A
T
J
=25°C
I
OUT
=250mA~750mA
T
J
=25°C
T
J
=25°C
I
OUT
=5mA~1A
V
IN
=-8V~-25V
f=10Hz~100kHz
T
a
=25°C
SYMBOL
MIN
-4.80
-4.75
2
10
10
3
3
0.05
0.1
100
-0.4
60
2.2
300
TYP
-6.00
TYP
-5.0
MAX
-5.20
-5.25
100
100
50
6
0.5
1.3
UNIT
V
V
V
mV
mV
mV
mV
mA
mA
mA
μV
mV/°C
dB
A
mA
UNIT
V
V
V
mV
mV
mV
mV
mA
mA
mA
μV
7 of 7
QW-R101-007.F
54
MIN
-5.76
-5.70
MAX
-6.24
-6.30
2
10
5
10
3
3
0.05
0.1
130
120
60
120
60
6
0.5
1.3
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
LM79XX
ELECTRICAL CHARACTERISTICS(Cont.)
PARAMETER
Output Voltage Drift
Ripple Rejection
Peak Current
Short Circuit Current
For UTC LM7908
(V
IN
=-14V)
PARAMETER
Output Voltage
Dropout Voltage
Line Regulation
Load Regulation
Quiescent Current
Quiescent Current Change
Output Noise Voltage
Output Voltage Drift
Ripple Rejection
Peak Current
Short Circuit Current
For UTC LM7909
(V
IN
=-15V)
PARAMETER
Output Voltage
Dropout Voltage
Line Regulation
Load Regulation
Quiescent Current
Quiescent Current Change
Output Noise Voltage
Output Voltage Drift
Ripple Rejection
Peak Current
Short Circuit Current
LINEAR INTEGRATED CIRCUIT
SYMBOL
TEST CONDITIONS
ΔV
OUT
/ΔT I
OUT
=5mA
RR
V
IN
=-9V~-19V, f=120Hz
I
PEAK
T
J
=25°C
I
SC
V
IN
=-35V
T
a
=25°C
TEST CONDITIONS
T
J
=25°C
V
OUT
V
IN
=-10.5V~-23V,
I
OUT
=5mA~1A, P
D
≦
15W
V
D
I
OUT
=1A
T
J
=25°C
V
IN
=-10.5V~-25V
T
J
=25°C
ΔV
OUT
V
IN
=-11.5V~-17V
T
J
=25°C
I
OUT
=5mA~1A
T
J
=25°C
ΔV
OUT
I
OUT
=250mA~750mA
T
J
=25°C
I
Q
T
J
=25°C
I
OUT
=5mA~1A
ΔI
Q
V
IN
=-11.5V~-25V
eN
f=10Hz~100kHz
T
a
=25°C
ΔV
OUT
/ΔT I
OUT
=5mA
RR
V
IN
=-11.5V~-21.5V, f=120Hz
I
PEAK
T
J
=25°C
I
SC
V
IN
=-35V
T
a
=25°C
TEST CONDITIONS
T
J
=25°C
V
OUT
V
IN
=-11.5V~-23V,
I
OUT
=5mA~1A, P
D
≦
15W
V
D
I
OUT
=1A
T
J
=25°C
V
IN
=-11.5V~-26V
T
J
=25°C
ΔV
OUT
V
IN
=-12V~-18V
T
J
=25°C
I
OUT
=5mA~1A
T
J
=25°C
ΔV
OUT
I
OUT
=250mA~750mA
T
J
=25°C
I
Q
T
J
=25°C
I
OUT
=5mA~1A
ΔI
Q
V
IN
=-11.5V~-26V
eN
f=10Hz~100kHz
T
a
=25°C
ΔV
OUT
/ΔT I
OUT
=5mA
V
IN
=-12.5V~-22.5V, f=120Hz
RR
I
PEAK
T
J
=25°C
I
SC
V
IN
=-35V
T
a
=25°C
SYMBOL
SYMBOL
MIN
54
TYP
-0.5
60
2.2
300
TYP
-8.0
MAX
UNIT
mV/°C
dB
A
mA
UNIT
V
V
V
mV
mV
mV
mV
mA
mA
mA
μV
mV/°C
dB
A
mA
UNIT
V
V
V
mV
mV
mV
mV
mA
mA
mA
μV
mV/°C
dB
A
mA
MIN
-7.68
-7.60
MAX
-8.32
-8.40
54
2
10
5
12
4
3
0.05
0.1
175
-0.6
60
2.2
300
TYP
-9.0
160
80
160
80
6
0.5
1.0
MIN
-8.64
-8.55
MAX
-9.36
-9.45
54
2.0
10
5
12
4
3
0.05
0.1
175
-0.6
60
2.2
300
180
90
180
90
6
0.5
1.0
UNISONIC TECHNOLOGIES CO., LTD
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7 of 7
QW-R101-007.F
LM79XX
ELECTRICAL CHARACTERISTICS(Cont.)
For UTC LM7912
(V
IN
=-18V)
PARAMETER
Output Voltage
Dropout Voltage
Line Regulation
Load Regulation
Quiescent Current
Quiescent Current Change
Output Noise Voltage
Output Voltage Drift
Ripple Rejection
Peak Current
Short Circuit Current
For UTC LM7915
(V
IN
=-23V)
PARAMETER
Output Voltage
Dropout Voltage
Line Regulation
Load Regulation
Quiescent Current
Quiescent Current Change
Output Noise Voltage
Output Voltage Drift
Ripple Rejection
Peak Current
Short Circuit Current
SYMBOL
V
OUT
V
D
ΔV
OUT
ΔV
OUT
I
Q
ΔI
Q
eN
ΔV
OUT
/ΔT
RR
I
PEAK
I
SC
SYMBOL
V
OUT
V
D
ΔV
OUT
ΔV
OUT
I
Q
ΔI
Q
eN
ΔV
OUT
/ΔT
RR
I
PEAK
I
SC
LINEAR INTEGRATED CIRCUIT
TEST CONDITIONS
MIN
TYP MAX UNIT
T
J
=25°C -11.52 -12.0 -12.48
V
V
IN
=-14.5V~-27V,
-11.40
-12.60
V
I
OUT
=5mA~1A, P
D
≦
15W
I
OUT
=1A
T
J
=25°C
2
V
V
IN
=-14.5V~-30V
T
J
=25°C
12
240
mV
V
IN
=-16V~-22V
T
J
=25°C
6
120
mV
I
OUT
=5mA~1A
T
J
=25°C
12
240
mV
I
OUT
=250mA~750mA
T
J
=25°C
4
120
mV
T
J
=25°C
3
6
mA
I
OUT
=5mA~1A
0.05
0.5
mA
0.1
1.0
mA
V
IN
=-14.5V~-30V
f=10Hz~100kHz
T
a
=25°C
200
μV
I
OUT
=5mA
-0.8
mV/°C
V
IN
=-15V~-25V, f=120Hz
54
60
dB
T
J
=25°C
2.2
A
V
IN
=-35V
T
a
=25°C
300
mA
TEST CONDITIONS
MIN
TYP MAX UNIT
T
J
=25°C -14.40 -15.0 -15.60
V
V
IN
=-17.5V~-30V
-14.25
-15.75
V
I
OUT
=5mA~1A, P
D
≦
15W
I
OUT
=1A
T
J
=25°C
2
V
V
IN
=-17.5V~-30V
T
J
=25°C
12
300
mV
V
IN
=-20V~-26V
T
J
=25°C
6
150
mV
I
OUT
=5mA~1A
T
J
=25°C
12
300
mV
I
OUT
=250mA~750mA
T
J
=25°C
4
150
mV
T
J
=25°C
3
6
mA
I
OUT
=5mA~1A
0.05
0.5
mA
0.1
1.0
mA
V
IN
=-17.5V~-30.5V
f=10Hz~100kHz
T
a
=25°C
250
μV
I
OUT
=5mA
-0.9
mV/°C
V
IN
=-18.5V~-28.5V, f=120Hz
54
60
dB
T
J
=25°C
2.2
A
V
IN
=-35V
T
a
=25°C
300
mA
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www.unisonic.com.tw
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QW-R101-007.F
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